2 There is a vessel containing a liquid of refractive index

Last updated: 6/20/2023

2 There is a vessel containing a liquid of refractive index 1 4 A point source of light is situated at a depth of 5 cm from the surface of the liquid An opaque disc floats directly above the source of light If anyone looks downwards from any point on the surface of the liquid and if the point source of light is not visible what will be the minimum nito 9 radius of the disc 5 1 cm